KIT_TC1797_SK Infineon Technologies, KIT_TC1797_SK Datasheet - Page 7

• Manufacturer Part Number: KIT_TC1797_SK
• Description: KIT STARTER AUDO FUTURE TC1797
• Manufacturer: Infineon Technologies
• Series: Audo Futurer
• Type: MCUr

Specifications of KIT_TC1797_SK

• Contents: Board, Adapters, Cables, CD, Power Supply
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: TC1797
• Other names: KITTC1797SKIN

Figure 2
Application Note
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VDD (1.5V)
VDD (1.5V)
of the load capacitors and VSSOSC should also be connected to this island. Traces for the load
capacitors and Xtal should be as short as possible.
The power distribution from the regulator to each power plane should be made over filters (see Figure
2).
RC Filters can be inserted in the supply paths at the regulator output and at the branchings to other
module supply pins like VDDOSC, VDDOSC3, VDDFL3, VDDPF, VDDPF3, VDDM, VDDMF, VDDAF
(see Figure 2). Using inductance or ferrite beads (5 – 10 µH) instead of the resistors can improve the
EME behaviour of the circuit and reduce the radiation up to ~10dBµV on the related supply net.
OCDS must be disabled.
Select weakest possible driver strengths and slew rates for all I/Os (see Scalable Pads AppNote
AP32111).
Use lowest possible frequency for SYSCLK.
Avoid cutting the GND plane by via groups. A solid GND plane must be designed.
[5V or 3.3V]
[5V or 3.3V]
Filtering of VDDOSC, VDDOSC3, VDDFL3, VDDPF, VDDPF3, VDDM, VDDMF, VDDAF supply
pins
VDD (1.5V)
VDD (1.5V)
VSS
VSS
* Resistance values must be calculated according to the application curcuit tolerances.
* Resistance values must be calculated according to the application curcuit tolerances.
** R=0 is required because of compatibility between TC1797 and TC1796 (AC,BC).
** R=0 is required because of compatibility between TC1797 and TC1796 (AC,BC).
R=10
R=10
R=10
R=10
R
R
R
R
330 nF
330 nF
*
*
*
*
330 nF
330 nF
R=0**
R=0**
47 nF
47 nF
VSS_P
VSS_P
47 nF
47 nF
VDDOSC
VDDOSC
VDDAF
VDDAF
VDDPF
VDDPF
VSS_P
VSS_P
VSSM
VSSM
VSSOSC
VSSOSC
VDDM
VDDM
VSS
VSS
F25
F25
Design Guideline for TC1797 Microcontroller Board Layout
µC
µC
7
VSS_P
VSS_P
VSS_P
VSS_P
VDDFL3
VDDFL3
VDDMF
VDDMF
VSSMF
VSSMF
VDDPF3
VDDPF3
VDDOSC3
VDDOSC3
VSS
VSS
330 nF
330 nF
3 x 47 nF
3 x 47 nF
47 nF
47 nF
330 nF
330 nF
R=10
R=10
R=10
R=10
R
R
*
*
PCB Design Recommendations
VDDP (3.3V)
VDDP (3.3V)
[3.3V]
[3.3V]
VDDP (3.3V)
VDDP (3.3V)
V2.4, 2008-11
AP32114